Revert "Revert "Enforce min_sdk_version of apex(use_vendor:true)""

This reverts commit bacf34d986011a37dc45ebbd59d464950cd7574d.

Reason for revert: reland with fix

Change-Id: Ia03f2808353f5640597ae7ecbf2e06fc903c6977
diff --git a/cc/cc_test.go b/cc/cc_test.go
index 9a9678f..67eb248 100644
--- a/cc/cc_test.go
+++ b/cc/cc_test.go
@@ -2398,6 +2398,34 @@
 	}
 }
 
+func TestLlndkLibrary(t *testing.T) {
+	ctx := testCc(t, `
+	cc_library {
+		name: "libllndk",
+		stubs: { versions: ["1", "2"] },
+	}
+	llndk_library {
+		name: "libllndk",
+	}
+	`)
+	actual := ctx.ModuleVariantsForTests("libllndk.llndk")
+	expected := []string{
+		"android_vendor.VER_arm64_armv8-a_shared",
+		"android_vendor.VER_arm64_armv8-a_shared_1",
+		"android_vendor.VER_arm64_armv8-a_shared_2",
+		"android_vendor.VER_arm_armv7-a-neon_shared",
+		"android_vendor.VER_arm_armv7-a-neon_shared_1",
+		"android_vendor.VER_arm_armv7-a-neon_shared_2",
+	}
+	checkEquals(t, "variants for llndk stubs", expected, actual)
+
+	params := ctx.ModuleForTests("libllndk.llndk", "android_vendor.VER_arm_armv7-a-neon_shared").Description("generate stub")
+	checkEquals(t, "use VNDK version for default stubs", "current", params.Args["apiLevel"])
+
+	params = ctx.ModuleForTests("libllndk.llndk", "android_vendor.VER_arm_armv7-a-neon_shared_1").Description("generate stub")
+	checkEquals(t, "override apiLevel for versioned stubs", "1", params.Args["apiLevel"])
+}
+
 func TestLlndkHeaders(t *testing.T) {
 	ctx := testCc(t, `
 	llndk_headers {